diff options
Diffstat (limited to 'Lib/test/test_sys.py')
| -rw-r--r-- | Lib/test/test_sys.py | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py index 0b8529a..446dc53 100644 --- a/Lib/test/test_sys.py +++ b/Lib/test/test_sys.py @@ -15,6 +15,7 @@ from test.support import os_helper from test.support.script_helper import assert_python_ok, assert_python_failure from test.support import threading_helper from test.support import import_helper +from test.support import interpreters import textwrap import unittest import warnings @@ -699,6 +700,33 @@ class SysModuleTest(unittest.TestCase): self.assertRaises(TypeError, sys.intern, S("abc")) + def test_subinterp_intern_dynamically_allocated(self): + s = "never interned before" + str(random.randrange(0, 10**9)) + t = sys.intern(s) + self.assertIs(t, s) + + interp = interpreters.create() + interp.run(textwrap.dedent(f''' + import sys + t = sys.intern({s!r}) + assert id(t) != {id(s)}, (id(t), {id(s)}) + assert id(t) != {id(t)}, (id(t), {id(t)}) + ''')) + + def test_subinterp_intern_statically_allocated(self): + # See Tools/build/generate_global_objects.py for the list + # of strings that are always statically allocated. + s = '__init__' + t = sys.intern(s) + + print('------------------------') + interp = interpreters.create() + interp.run(textwrap.dedent(f''' + import sys + t = sys.intern({s!r}) + assert id(t) == {id(t)}, (id(t), {id(t)}) + ''')) + def test_sys_flags(self): self.assertTrue(sys.flags) attrs = ("debug", |